属颈外动脉的分支()在皮肤表面可扪及的动脉()上下颌骨的血供来源()
A．面动脉
B．上颌动脉
C．两者均有
D．两者均无
参考答案：C,A,B
Your sister is standing between ______. [ ]
A. he and I
B. him and me
C. he and me
D. I and he
主动脉瓣关闭不全时可有以下哪项周围血管征
A．交替脉B．水冲脉C．重搏脉D．无脉E．奇脉
